<!DOCTYPE html>

<head>
  <title>Windows</title>
</head>

<body>
  <a href="page_1.html" rel="noopener noreferrer" target="_blank">New tab or window link</a>
  <a href="page_2.html" onclick="window.open('page_2.html', 'newwindow', 'width=600,height=400'); return false;">New
    window link</a>
</body>

</html>